Light emitting device

Abstract

In a light-emitting device wherein a light shield portion is disposed in touch with a transparent electrode included in a pixel, the light shield portion ( 105 in FIG. 1 ) is disposed at the peripheral part of the transparent electrode ( 101 ), whereby that part of light (visible light) emitted in an EL layer ( 102 ) which escapes from the peripheral part of the transparent electrode ( 101 ) can be intercepted or reflected. Thus, the loss of the light emitted in the EL layer ( 102 ) and the leakage thereof to an adjacent pixel can be prevented, and the efficiency of deriving the light can be sharply heightened.

What is claimed is:  
     
       1. A light-emitting device comprising: 
       a transparent electrode formed in contact with an insulating surface;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       an electro-luminescence layer formed on said transparent electrode and overlapped with said interlayer insulating film;  
       a non-transparent electrode formed on said electro-luminescence layer; and  
       a light shield portion formed in contact with said insulating surface.  
     
     
       2. A light-emitting device according to  claim 1 , wherein said light shield portion comprises an insulating film containing a pigment or carbon. 
     
     
       3. A light-emitting device according to  claim 1 , wherein said light shield portion comprises a conductive material. 
     
     
       4. A light-emitting device according to  claim 1 , wherein said light shield portion reflects light emitted in said electro-luminescence layer. 
     
     
       5. A light-emitting device according to  claim 1 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and a portable telephone. 
     
     
       6. A light-emitting device comprising: 
       a transparent electrode formed in contact with an insulating surface;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       a light shield portion formed in contact with said insulating surface;  
       an electro-luminescence layer formed on said transparent electrode and overlapped with said interlayer insulating film; and  
       a non-transparent electrode formed on said electro-luminescence layer,  
       wherein a part of said light shield portion is in contact with said transparent electrode.  
     
     
       7. A light-emitting device according to  claim 6 , wherein said light shield portion comprises an insulating film containing a pigment or carbon. 
     
     
       8. A light-emitting device according to  claim 6 , wherein said light shield portion comprises a conductive material. 
     
     
       9. A light-emitting device according to  claim 6 , wherein said light shield portion reflects light emitted in said electro-luminescence layer. 
     
     
       10. A light-emitting device according to  claim 6 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and a portable telephone. 
     
     
       11. A light-emitting device comprising: 
       a plurality of transparent electrodes formed in contact with an insulating surface;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       an electro-luminescence layer formed on each of said transparent electrodes and overlapped with said interlayer insulating film;  
       a non-transparent electrode formed on said electro-luminescence layer; and  
       light shield portions formed in contact with said insulating surface.  
     
     
       12. A light-emitting device according to  claim 11 , wherein said light shield portions comprise an insulating film containing a pigment or carbon. 
     
     
       13. A light-emitting device according to  claim 11 , wherein said light shield portions comprise a conductive material. 
     
     
       14. A light-emitting device according to  claim 11 , wherein said light shield portions reflect light emitted in said electro-luminescence layer. 
     
     
       15. A light-emitting device according to  claim 11 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and portable telephone. 
     
     
       16. A light-emitting device comprising: 
       a plurality of transparent electrodes formed in contact with an insulating surface;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       light shield portions formed in contact with said insulating surface;  
       an electro-luminescence layer formed on each of said transparent electrodes and overlapped with said interlayer insulating film; and  
       a non-transparent electrode formed on said electro-luminescence layer,  
       wherein each of said light shield portions is in contact with said respectively corresponding transparent electrodes.  
     
     
       17. A light-emitting device according to  claim 16 , wherein said light shield portions comprise an insulating film containing a pigment or carbon. 
     
     
       18. A light-emitting device according to  claim 16 , wherein said light shield portions comprise a conductive material. 
     
     
       19. A light-emitting device according to  claim 16 , wherein said light shield portions reflect light emitted in said electro-luminescence layer. 
     
     
       20. A light-emitting device according to  claim 16 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and a portable telephone. 
     
     
       21. A light-emitting device comprising: 
       a plurality of transparent electrodes formed in contact with an insulating surface;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       light shield portions formed in contact with said insulating surface;  
       an electro-luminescence layer formed on each of said transparent electrodes and overlapped with said interlayer insulating film; and  
       a non-transparent electrode formed in contact with said electro-luminescence layer,  
       wherein each of said light shield portions is in contact with at least two of said transparent electrodes.  
     
     
       22. A light-emitting device according to  claim 21 , wherein said light shield portions comprise an insulating film containing a pigment or carbon. 
     
     
       23. A light-emitting device according to  claim 21 , wherein said light shield portions comprise a conductive material. 
     
     
       24. A light-emitting device according to  claim 21 , wherein said light shield portions reflect light emitted in said electro-luminescence layer. 
     
     
       25. A light-emitting device according to  claim 21 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and a portable telephone. 
     
     
       26. A light-emitting device comprising: 
       a transparent electrode formed in contact with an insulating surface, and connected with a thin film transistor through a wiring line;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       an electro-luminescence layer formed on said transparent electrode and overlapped with said interlayer insulating film;  
       a non-transparent electrode formed on said electro-luminescence layer; and  
       a light shield portion formed in contact with said insulating surface.  
     
     
       27. A light-emitting device according to  claim 26 , wherein said light shield portion comprises an insulating film containing a pigment or carbon. 
     
     
       28. A light-emitting device according to  claim 26 , wherein said light shield portion comprises said wiring line. 
     
     
       29. A light-emitting device according to  claim 26 , wherein said light shield portion reflects light emitted in said electro-luminescence layer. 
     
     
       30. A light-emitting device according to  claim 26 , wherein said transparent electrode is an anode, and said non-transparent electrode is a cathode. 
     
     
       31. A light-emitting device according to  claim 26 , wherein said light shield portion comprises a metal material having a reflectivity of 60% or more. 
     
     
       32. A light-emitting device according to  claim 26 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a a personal computer, a digital camera, and a portable telephone. 
     
     
       33. A light-emitting device comprising: 
       a transparent electrode formed in contact with an insulating surface, and connected with a thin film transistor through a wiring line;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       a light shield portion formed in contact with said insulating surface;  
       an electro-luminescence layer formed on said transparent electrode and overlapped with said interlayer insulating film; and  
       a non-transparent electrode formed on said electro-luminescence layer, wherein a part of said light shield portion is in contact with said transparent electrode.  
     
     
       34. A light-emitting device according to  claim 33 , wherein said light shield portion comprises an insulating film containing a pigment or carbon. 
     
     
       35. A light-emitting device according to  claim 33 , wherein said light shield portion comprises said wiring line. 
     
     
       36. A light-emitting device according to  claim 33 , wherein said light shield portion reflects light emitted in said electro-luminescence layer. 
     
     
       37. A light-emitting device according to  claim 33 , wherein said transparent electrode is an anode, and said non-transparent electrode is a cathode. 
     
     
       38. A light-emitting device according to  claim 33 , wherein said light shield portion comprises a metal material having a reflectivity of 60% or more. 
     
     
       39. A light-emitting device according to  claim 33 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and a portable telephone. 
     
     
       40. A light-emitting device having a plurality of pixels comprising: 
       transparent electrodes formed in contact with an insulating surface, and connected with thin film transistors through wiring lines;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       an electro-luminescence layer formed on each of said transparent electrodes and overlapped with said interlayer insulating film;  
       a non-transparent electrode formed on said electro-luminescence layer; and  
       light shield portions formed in contact with said insulating surface.  
     
     
       41. A light-emitting device according to  claim 40 , wherein said plurality of pixels are adjacent to each other. 
     
     
       42. A light-emitting device according to  claim 40 , wherein said light shield portions comprise an insulating film containing a pigment or carbon. 
     
     
       43. A light-emitting device according to  claim 40 , wherein said light shield portions comprise said wiring lines. 
     
     
       44. A light-emitting device according to  claim 40 , wherein said light shield portions reflect light emitted in said electro-luminescence layer. 
     
     
       45. A light-emitting device according to  claim 40 , wherein said transparent electrodes are anodes, and said non-transparent electrode is a cathode. 
     
     
       46. A light-emitting device according to  claim 40 , wherein said light shield portions comprise a metal material having a reflectivity of 60% or more. 
     
     
       47. A light-emitting device according to  claim 40 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an El display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and a portable telephone. 
     
     
       48. A light-emitting device having a plurality of pixels comprising: 
       transparent electrodes formed in contact with an insulating surface, and connected with thin film transistors through wiring lines;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       light shield portions formed in contact with said insulating surface;  
       an electro-luminescence layer formed on each of said transparent electrodes and overlapped with said interlayer insulating film; and  
       a non-transparent electrode formed on said electro-luminescence layer,  
       wherein each of said light shield portions is in contact with said respectively corresponding transparent electrodes.  
     
     
       49. A light-emitting device according to  claim 48 , wherein said plurality of pixels are adjacent to each other. 
     
     
       50. A light-emitting device according to  claim 48 , wherein said light shield portions comprise an insulating film containing a pigment or carbon. 
     
     
       51. A light-emitting device according to  claim 48 , wherein said light shield portions comprise said wiring lines. 
     
     
       52. A Light-emitting device according to  claim 48 , wherein said light shield portions reflect light emitted in said electro-luminescence layer. 
     
     
       53. A light-emitting device according to  claim 48 , wherein said transparent electrodes are anodes, and said non-transparent electrode is a cathode. 
     
     
       54. A light-emitting device according to  claim 48 , wherein said light shield portions comprise a metal material having a reflectivity of 60% or more. 
     
     
       55. A light-emitting device according to  claim 48 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and a portable telephone. 
     
     
       56. A light-emitting device having a plurality of pixels comprising: 
       transparent electrodes formed in contact with an insulating surface, and connected with thin film transistors through wiring lines;  
       an interlayer insulating film formed in contact with a portion of said insulating surface;  
       light shield portions formed in contact with said insulating surface;  
       an electro-luminescence layer formed on each of said transparent electrodes and overlapped with said interlayer insulating film; and  
       a non-transparent electrode formed on said electro-luminescence layer,  
       wherein each of said light shield portions is in contact with at least two of said transparent electrodes.  
     
     
       57. A light-emitting device according to  claim 56 , wherein said plurality of pixels are adjacent to each other. 
     
     
       58. A light-emitting device according to  claim 56 , wherein said light shield portions comprise an insulating film containing a pigment or carbon. 
     
     
       59. A light-emitting device according to  claim 56 , wherein said light shield portions comprise said wiring lines. 
     
     
       60. A light-emitting device according to  claim 56 , wherein said light shield portions reflect light emitted in said electro-luminescence layer. 
     
     
       61. A light-emitting device according to  claim 56 , wherein said transparent electrodes are anodes, and said non-transparent electrode is a cathode. 
     
     
       62. A light-emitting device according to  claim 56 , wherein said light shield portions comprise a metal material having a reflectivity of 60% or more. 
     
     
       63. A light-emitting device according to  claim 56 , wherein said light-emitting device is incorporated in at least one selected from the group consisting of an EL display device, a sound reproduction device, an image playback device, a video camera, a head mount display, a personal computer, a digital camera, and a portable telephone.